Why Choose the ABB S203M-K63NA Miniature Circuit Breaker?
The ABB S203M-K63NA is a premium 3P+N miniature circuit breaker (MCB) from the trusted ABB System pro M compact S200M series. Designed to deliver reliable overload and short-circuit protection, it is ideal for industrial, commercial and OEM electrical installations where dependable performance and high fault protection are essential.
Featuring ABB's advanced current-limiting technology, the S203M-K63NA combines a delayed thermal tripping mechanism for overload protection with an electromechanical tripping mechanism for short-circuit protection. Its K curve characteristic makes it particularly suitable for circuits with high inrush currents, including motors, transformers and other inductive equipment.
With a 63 A rated current, 3P+N configuration and 10 kA breaking capacity, this miniature circuit breaker provides dependable protection for three-phase electrical systems requiring neutral switching. Its compact DIN rail design enables straightforward installation in modern distribution boards and industrial control panels.
Key Advantages
- Compact 3P+N miniature circuit breaker for professional electrical installations.
- 63 A rated current for higher power distribution circuits.
- K curve tripping characteristic suitable for motors, transformers and inductive loads.
- 10 kA rated short-circuit breaking capacity.
- Current-limiting design helps minimise fault energy.
- Compatible with ABB System pro M compact accessories.
Key Features
- ABB System pro M compact S200M series.
- Product ID: 2CDS273103R0607.
- Model: S203M-K63NA.
- Rated current: 63 A.
- K curve tripping characteristic.
- 3P+N configuration with three protected poles and switched neutral.
- Thermal overload and electromechanical short-circuit protection.
- DIN rail mounting with screw terminals.
Reliable Protection for High-Inrush Electrical Circuits
Miniature circuit breakers automatically disconnect electrical circuits when overloads or short circuits occur, helping to protect wiring, equipment and connected loads. The ABB S203M-K63NA combines thermal and magnetic tripping technologies to deliver dependable protection in demanding industrial environments.
Its K curve characteristic makes it particularly suitable for applications where temporary high inrush currents occur during normal operation, such as motor starters, transformers, compressors and other inductive equipment.
Typical Applications
- Industrial control panels.
- Three-phase power distribution.
- Motor control centres.
- Transformer protection.
- OEM machinery.
- Commercial and industrial electrical installations.
